1 Translational Gastroenterology Unit, Nuffield Department of Medicine, Oxford NIHR Biomedical Research Centre, John Radcliffe Hospital, University of Oxford, Oxford, UK.
2 Solent Centre for Digestive Diseases, Portsmouth, UK.
3 School of Medicine, Cardiff University, Cardiff, UK.
4 Department of Gastroenterology, St James's Hospital, Dublin, Ireland.
5 Department of Gastroenterology, University Hospital of North Tees, Stockton-on-Tees, UK.
6 Northern Institute for Cancer Research, Newcastle University, Newcastle, UK.
7 St Mark's Hospital and Academic Institute, London, UK.